Jouets et figurines

Brick-System Arches: 3D Models and STL Files

This collection gathers STL files for arches used in brick building systems: single arch bricks, window frames, bridge and tunnel spans, and decorative arch shapes. It helps if you are extending an existing brick model or building a structure from scratch and need a curved element that fits a stud grid. Each entry comes from a different author page, so the file details vary. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Le texte de cette collection est rédigé en anglais ; la recherche, elle, fonctionne dans toutes les langues.

Une collection Polyzon · 48 modèles sur 4 plateformes

Comment cette collection est composée

Polyzon compose cette collection à partir des résultats de recherche des plateformes connectées. Les doublons et les modèles sans aperçu sont retirés, les correspondances faibles sont placées à la fin, et le reste suit l’ordre de la recherche. Les modèles appartiennent à leurs auteurs : consultez les conditions sur la page de chaque modèle.

Règles de sélection : la rédaction de Polyzon · Texte mis à jour le 15/10/2026

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«Brick-System Arches: 3D Models and STL Files»

Arch elements differ in what they replace. A single arch brick takes the place of one standard brick in a wall and keeps the same stud pitch, while a window frame combines a surround with an arched opening. Bridge and tunnel parts are longer spans sized for track layouts, and decorative arches follow gothic, roman or cast-iron patterns and usually serve as display pieces rather than load-bearing walls.

Before printing, read the author's notes on dimensions and the unit grid, because a part that looks similar in a preview can sit on a different stud pitch. Check whether the file is one piece or several, how thick the walls are, and how steep the overhang is on the curved underside, since that decides whether supports are needed. Photos of real prints and the material and settings the author lists tell you more than a render.

If a search returns little, try other terms for the same shape: curved top, half arch, girder, beam, frame, doorway, span or portal. Related topics widen the results further, such as castle walls, modular buildings, train layouts and historic architecture. Narrowing by part size or by the structure you are building usually helps more than adding keywords.

FAQ

Questions fréquentes

What does "arch" mean in these brick model files?
It can be a single brick with a curved top, a window or doorway surround, or a span that bridges two supports. The title and the preview usually make clear which of these you are looking at.
How do I check that a part matches the scale of my bricks?
Look at the stud pitch and overall dimensions given on the model page. Authors working in brick systems normally state the grid unit and the number of studs the part occupies.
Do curved undersides need support material?
It depends on the overhang angle and the wall thickness. Some files are shaped to print without supports, others are not, so check the author's notes and any photos of finished prints.
Can these parts be used in a train layout?
Bridge and tunnel pieces are usually sized for track, but clearance height and span length differ between files. Compare the listed dimensions with your own layout before choosing.
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